Shaving-machine for sound-record tablets.



F. L. CAPPS & J. SCULLY.

sHAvlNG MACHINE Fon SOUND RECORD TABLETS.

APPLICATION FILED OCT-|4119fu5.

Patented May 29, 191?.

9 SHEETS--SHEET I.

UWE/WOR@ I. L. CAPPS & I. I. SCULLY.

SHAVING MACHINE FOR SOUND RECORD TABLETS.

APPLICATION FILED OCT. 14,1915.

Patented May 29, 1917.

9 SHEETS-SHEET 2.

/lIll/E/I/TORS F. L. CAPI-S 11.1. SCULLY.

SHAVING MACHINE FOR SOUND RECORD TABLETS.

APPLICATION FILED OCT. I4, |916. 35%?7480 Patented May 29, 1917.

9 SHEETS-SHEET 3.

/NVE/VTORS F. L. CAPPS L J. 1. SCULLY.

SHAVINGV MACHINE FOR SOUND RECORD TABLETS.

APPLICATION FILED @CLI-1.19m.

L QQJQDF'VS. Patented May 29, 19N.

9 SHEETS-SHEET 4.

F. L. CAPPS @13. j. SCULLY.

SHAVINGl MACHINE FOR SOUND RECORD TABLETS.

APPLICATloM man 01:1. 14, 1915.

l @@Efo Patented May 29, 1917.

9 SHEETS-SHEET 5.

I 11111111 l l F. L. CAPPS & l. l. SCULLY.

SHAVING MACHINE FOR SOUND RECORD TABLETS. APPLlcATloN FILED ocr.14.1915.

LQQWMR., hmmm May 29,1917.

9`sHEETs-SHEET s.

F. L. CAPPS L I. I. SCULLY.

SHAVING MACHINE FOR SOUND RECORD TABLETS.

APPLICATION FILED OCT. I4, 1915.

192273480 Patented May 29, 1917.

9 SHEETS-SHEET I.

F. L. CAPPS I l. 1. SCULLY.

SHAVING MACHINE EOR SOUND RECORDv TABLETS.

APPLICATION FILED ocTi I4. IaIs.

Patented May 29, 191?.

9 SHEETS-SHEET B.

F. Li CAPPS & l. l. SCULLY.

sHAvlNG MACHINE Fori SOUND RECORD TABLETS.

il il PATENT @FLGE FRANK L. CAPES AND JOHN J'. SCULLY, OF BRIDGEFORT,CONNECTICUT, ASSIGNORS TO AMERICAN' GRAPHOPHONE COMPANY, OF BRIDGEJEORT,CNNECTIC'T, A CORPORA- TION F WEST VIRGINIA.

SHAVINGMACHNE FOR SOUND-RECORD TABLETS.

Application led october 14, 1915.

To all whom t may concern.'

Be it known that we, FRANK L. CAPES and JOHN J. SCULLY, citizens of theUnited States of America, and residents of Bridgey port, Connecticut,have invented a new Vand useful lmprovement in Shaving-Machines forSound-Recordv Tablets, which invention is fully set forth in thefollowing specitication.

This invention relates to talking machines, and more particularly tomachines designed for shaving ott the surfaces of record tablets used insuch machines in order to present a vsmooth and properly preparedsurface for receiving the record. The record tablets employedin talkingmachines used for recording sound are generally of wax or wax-likematerial, and the record is out or engraved therein.` lt is necessarythat the surface be smooth and regular. Moreover, in certain classes ofmachines used for dictation purposes, after lthe record has beendictated and transcribed, it is the common practice to shave oit" therecord to prepare the tablet for receiving a new record thereon. Thepresent invention is designed for use wherever it is desired to shave atablet to prepare it for receiving a record, but more particularly it isdesigned for use 30 in connection with dictaphone machines for shavingoff a transcribed record and preparing the tablet for reuse as indicatedabove.

lWith this object in view, the invention consists, broadly stated, of amotor, preferably mounted in a suitable box or casing, operativelyconnected to a carriage moving horizontally on a suitable guide or waylocated above the casing, the movement of the carriage being parallelwith the surface of a revolving cylindrical tablet also driven by saidmotor. The carriage supports a suitable shaving knife in operativerelation to the surface ot therecord tablet, and automatic means areprovided whereby the carriage. when it has reached the end of the recordablet and finished one cut, automatically shuts oft the power (as anelectric `'current'tffwtlientoifthe power being 50 again automaticallyswitched on as the carriage is returned to position to 'take a new cut;and also after the termination of a cut upon the record the knit@ isautomatically Specification of Letters Patent.

Patented May 2%?, MMU?.

serial no. 55,913.

alialneed a sufficient distance to cause it to take a new cut or shavingfrom the tablet. The mechanism b v which this advance of the knife isaccomplished is also capable of manual operation, to the end that theknife may be initially adjusted to take the first cut, after which theadjustments are automatic.

For the purpose of removing chips or shavings and preventing theannoying accumulations thereof upon the machine and the clogging ofparts of the mechanism,'

automatic means are provided for withdrawing shavings, as they leave theknife, by a suction device operated by the motor, the shavings beingremoved to a suitable closed receptacle within the motor box or casing.rThis receptacle may be removed to empty the accumulation of shavings.

The inventive idea involved is Capable of receiving a. varie-ty ofmechanical expressions, two of which, for the purpose ofillustrating theinvention. are shown in the accompanying drawings, but it is 'to beexpressly understood that such drawings are for the purpose ot'illustration only and are not designed to define the limitations of theinvention, reference being had to the appended claims for this purpose.

In said drawings,

Figure l is a rear elevation of a shaving machine embodying theinvention;

Fig. 2 is a top plan view thereof;

Fig. 3 is an end elevation, parts being shown in section;

Fig. el is a bottom plan view of the carriage;

Fig. 5 is a perspective view of the shaving knife and parts operativelyconnected therewith to |automatically operate the same, the parts beingshown separated or drawn -apart to facilitate clear illustration;

Fig. 6 is a perspective view of the pinion which acts to advance theknife, together i'iththe sleeve or bearing therefor:

Fig. 7 is a perspective view ot a cam forming one of the detailed partsof the actuating mechanism for the knife:

Fig. S is a front elevation of the carriage and the switch mechanismcontrolling the motor;

Fig. 9 is a sectional view showing ythe means tor actuating the pawl foradvancing the knife;

Fig. 10 is a detail perspective of the switch lever;

Fig. 11 is a fragmentary plan view of another embodiment of theinvention, the view showing the shaving' knife and the partsoperatively'connected therewith to operate the same;

Fig. 12 is an end, view, partly in section, of the parts shown in Fig.11;

Fig. 13 is a perspective View of some of the parts shown in Figs. 11and'12, these being shown separated or drawn apart to facilitate clearillustration;

Fig. 14C is a perspective view of the I'notor receiving box or casingwith the side door thereof open and the' box or casing inclosing theresistance device in position; Fig. 15 is a detail perspective of thecatch for the door to the motor casing:

Fig. 1G is a broken sectional detail showing the door of the box orcasing closed; and

Fig. 17 is a sectional detail showing some of the electricalconnections.

Referring to the drawings, in which like reference 'numerals indicate.like 'parts throughout the several views; 1 indicatesathe'casingQthe'ears 1 havinglan upturned triangular-ly shaped lobewhich-acts 'as a stop to limit the'opening movement of the door',preferably to a 'horizontal position. The door is'retained in closedposition by means of a catch 18 (Figs '141,v 15 an'dll), consisting ofapiece of' springmetahshaped as shown" in Fig. 15j, having a' tongue"which `engages the downwardly extended rabbeted flange on they casingwhen the door is closed andthe latch is il'rengaging posiL tion. `Forthe purpose of exerting' spring tensionf upon thecatch to hold thedo'orsnugly closed, the catch 8 hasspring arms 8"' "and '87 reacting against.the: inner 4face of the door lhe catchS isY secured to the inner faceof.' the door by means'ofa sleeve '9 vand `a pin -9a1extending 4throughthe door, through thesleeve and throi-'lghfa central openinginfthecatch, the parts-being Abound together bya screw 10, as will be readily'seei-iffroinan inspectionof'Figs. 14 andfl. Ili`he part 9a isprovided'with 'any suitable means,` such' as a transverse bar `11,by'means'of which 'the' catch'may be turned to engage 'and disengage theHarige.

Laer/,vae

As is connnon with machines of the class to which this inventionrelates, there is mounted within the casing l a suitable niotor 12,preferably an electric motor, shown in dotted lines in Fig. 1, the samebeing supported on a bracket 13 bolted to a plate 14 forming the top ofthe box or casing and also the supporting platform for the shavingmachine proper. A suitable driving belt or cord 15 passes over a drive'pulley 16 on the motor shaft 1T and extends upward through an'opening 18(Fig. 2) in the plate 14, and 'passes over a driving pulley 19 on theniaml'rel shaft 20, which shaft has bearings in brackets 21 and 29,'shown on the right hand side of Fig'. 1. and on an end gate 22 pivotallysupportedI at 23 on an upwardly extending bracket 21? at the left handside of Fig."1, said gate being provided with a suitable catch 25 (Fig.2) for retaining it ,in its closed position. On the shaft 20, adjacentto the pulley 1S, is a second pulley v31, over which passes a belt 82said belt passing arounda pulley-33 'on a feed screw l' shaft '34."havin;r bearings in suitable brackets 35, vone of which is shown in Figpprojecting upward from the plate 14. Supported iiisu'itable bracketsmounted on the opopsit'e ends of theplate 14, and parallel withthe feed'screw 31, is a rod 36 forming the guide -or way upon which the knife'supporting carriage SlT'travels, the carriagebeingoperatively connectedto the feed screw by ahalf-nut 38' carried on an arm 39 secured tothecarriage as by screwsLO-l-O 2). c'

The carriage is in ythe form of a .casting having a sleeve vlandpreferably having the lower middle portion thereof Vcutv away, and itsends :embracing the guide or way 3G sov that the carriage is free tomove or slide upon the guide or way 3G, or inay be turned raroundthe-said guide or way to throwvthe parts into and out -of operativeposition.' Projecting from the carriage, upward vand over tlierecordtablet. 'is'a curved arm 12 having a downwardly projecting leg 12 `whichrests upon v"a longitudinally extending);V rail 18 ony the plate 1l,said Aarm 12 being preferablyv provided' with an enlargement ilto'piwwide-the necessary mass or weight'4 to hold thev knife. down tioits work, as' will be understood from further "description. Extending"upward from 'the sleeve 41 is a vportion of the casting serving as thesupport fory the knife and the automatic advancing 'inech'anisinvtherefor. Referring tolfigy, theknif'e 46 is preferably in the forni ofAa sapphire blade securely mounted on one end 'of a bar li' which, inaccordance with'my'invent'ion, is preferably cylindrical as shown andprovided with a flanged head 48 onthe eiulopposil'e the knife and with arack 49 on thev underside thereof. This bar 11T ismount'edin ahorizontal vbore in lio the casting 45, as will be understood by aninspection of Fig. 3, with a` spring 50 reacting between the head S onthe bar and the face of the casting i5, the spring having a tendency towithdraw or retract the bar and shaving blade from the cylinder. Mountedin a bore formed in the casting 45 immediately under the bar @i7 andtransversely thereof is a pinion 51 engaging the ack 49 on the bar. Thispinion is preferablyformed integrally with a shaft 52, and has a wormgear 53 on one end thereof and preferably also integral therewith. y Theshaft 5l passes through a bearing sleeve 5l located yin the transversebore within the casting 45, which sleeve has its upper portion cut away.as at 55 (Figs. 5 and 6), soA as to permit the upper portion of thepinion 5l to engage the rack 4-9 on the bar 47.

Mounted in bearings in the casting 45 is a vertical shaft 56 havingformed on its lower end a worm 57, (Fig. 6), engaging the worm gear 53on theshaft 52. yThis shaft 56 has secured on its upper end a disk 5Shaving a ratchet 59 on the under side of theperiphery thereof. The disk58 is preferably hurred or knurled on its periphery to facilitateturning the same by hand, and it will be readily understood that, byturning the disk 58 in one direction, the pinion 51 Will be caused toadvance the knife to the left, and by turning it in the other direction,it will Withdraw the knife to the right, by which means the position ofthe knife with relation to the surface of the recordtablet may beinitially adjusted.

For the purpose of effecting t-he automatic advancement of the knife atthe close of one cut, into position to take the next succeeding cut onthe tablet, means are provided for imparting a step-hy-step turningmovement to the disk 58 at the end of each cut. As shown in Figs. l to9, the said means consist of a lever 60 rigidly secured at its lower endto a rock-shaft 61 mounted to rock in bearings on the carriage,extending transversely to the guide or Way 36 and just above the same.Rigidiy secured to the opposite end of the shaft 61 from the lever 60 isan arm or lever 62, having a downwardly extendingend or nose riding uponthe upper surface of the guide or way 86 during the shaving operation.Located in the upper surface of said guide or way is a depression 63(Figs. l, Q and 9) into which the nose of the lever 6:2 falls when theknife has reached the extreme end of the cut, this action being insuredby a suitable spring 64; secured to the lever 60 at one end and to thecasting of the carriage at the other end. To facilitate the entrance andexit of the nose of the lever 62 into the depression 63, the end wallsof said depression are preferably formed on an incline or cam, as willbe readily understood from an inspection of Fig. l. Referring to Fig. 1,it will be seen that the lever 60 is rocked to the right When the noseof the lever 62 enters the depression 68 and is rocked to the left whensaid lever is Withdrawn from said depression. For the purpose ofenabling the nose of the lever 62 to contact with the upper surface ofthe guide or way 36, a slot 65 (see Fig. 4f) is formed in the sleevethrough Which slot the lever 62 extends into contact with the guide orWay 36.

Pivotally mounted upon the upper end of the lever 60 is a pawl 66 Whoseopposite end 67 serves as a weight tending to throw the pawl 66 intoengagement with the ratchet on the disk 56, and yet yielding when thelever 60 is thrown to the right7 so as to permit the pawl to ride overthe ratchet teeth while incidentally throwing the nose of the lever intoengagement with said ratchet teeth, as will be readily understood.l/Vhcn the nose of the lever 62 falls into the depression 63. the lever60 is thrown to the right and the pawl 66 is withdrawn to the right toengage another tooth of the ratchet 59. and when the carriage isadvanced from right to left. t-he lever 60 is likewise rocked from rightto left, in'iparting a slight turning movement to the shaft 56 andthereby slightly advancing the knife 46 just sullicient t-o'position itfor taking another thin shaving from the sur face of the record tablet68 mounted on the mandrel 69. For the purpose of elevating the weightedend 67 and depressing the pawl 66, when the lever 60 moves from left toright7 a cam surface 67 (Figs. 7 and 8) is arranged in the path of theweighted end 67, this cam surface being here shown as formed on abracket arm secured to the casting of the carriage. lVhen the lever 60moves from right to left, the Weighted end 67 descends along the surfaceof the cam 67 and the nose of the pawl G6 is again thrown into operativeengagement with the ratchet 59. Continued movement of the lever in thesame direction again causes the weighted end of the pavvl to be raisedand the nose of the pawl to he disengaged from the ratchet teeth. liththis construction.- the paWl is disengaged from the teeth at the endsot' its path of reciprocation. thus making it possible for the wheel 56to he freely turned manually in either direction.

in Figs. ll` i2 and 1?). we have. shown an` other form of the mechanismfor adjusting.

the knife, this form being. in fact. preferable in many cases.

The knife 46 is carried liv a har 47a provided wi'th a rack 49 on itslower side. ik spring 50 reacts against a head -l-S on the har andagainst the casting 45 in which the bar is mounted and serves to pressthe bar outwardly, thus normally tending to with draw the knife from therecord. The rack 49a is engaged by a pinion 51a on a shaft 52a carryinga worm-gear 53a. rlhe wormgear meshes with a worm 57a on a verticalshaft 56a. All of Athe parts last above described are similar to thosevpreviously described, and are similarly mounted in the casting 45.

At the upper end of the vertical shaft 56 is a hand-wheel 58, by meansof which the shaft can be manually turned at will to adjust the knife bymeans of the gearing that has been described. rlhe shaft 562t carries aseries of ratchet teeth which are preferably formed on a wheel 59"secured to the shaft.

below the said hand-whcel 58a.

Mounted on the casting l5 is a lever 60a pivotcd between its ends formovement about an axis at 61a which is parallel to the guide 36.vertically pivoted to the upper end of the lever a is a pawl 66a havinga pointed end adapted to engage-the ratchet teeth on the wheel 59a. Asclearly shown in Fig. 12, lever 60*SL carries a pin or bar 66", and acoiled tension spring 66c connects lthe free end of this pin lor barwith a depending finger 66d on the pawl, thus tending to hold the pawlin. engagement with the ratchet teeth. It will be seen that, when thelever is oscillated about its pivot, the pawl will engage the ratchetteeth and turn the wheel 59a to effect the adjustment of the knife. Aspring 64a serves to automatically retract the lever to move the pawl in'forced into the notch 63n by means of the spring 64a. Fig. 12 clearlyshows the lever with its lower end in the notch. The notch is sopositioned that the lever will reach the deepest part thereof at or nearthe completion of the cut on theY record. It will be seen that movementof the carriage in the reverse direction toward theinitial end of therecord will cause the lever to engage the cam surface of the notch andbe forced outward, its upper end carrying the pawl in the direction toturn the Wheel 59a. However, as had already been stated, the carriage isnot moved directly back along the guide, but is first swung about theguide to a greater or less extent. From Fig. 12, it will be obvious thatthis upward swinging of the carriage is equally edective to swing thelever. When the carriage is swung upward, the shoulder at the upper edgeof the Leemans notch will engage the lever and move it outward to agreater or less extent, depending upon the extent of upward swing of thecarriage. llt is therefore clear* that any movement of the carriage outof the position which it has at the end of the cut will swing the leverto advance the knife. In order that the shaft 56a-may be normally freefor manual turning, we preferably provide a cam 67*L adjacent the pawland adapted to engage the aforesaid finger 66d on the pawl. The cam 67ais provided with aV notch 67b and, when the pawl is reciprocated, thespring 66c moves the finger into the notch.I From Fig. 11, it will beclear that the cam holds the pawlfout of engagement with the ratchetteeth at the ends of its path of reciproca-tion -and that, at the centerof its path, when the linger is in the notch, the pawl engages the teethto turn the wheel. `With the lower end of the lever 60EL engaging theperiphery of the guide, or fully entered into .the notch, the ratchetteeth will be disengaged by the pawl and manual adjustment b v means ofthe wheel 581 can be effected. Thus thcl knife may be manually adjustedto a position for taking oifof the tablet a first rough-cut, whereupon,by movement of the carriage to initial position, the knife will beautomatically advanced a slight distance sufficient to take'the finalfinishing cut. j y

Preferably, as shown in Figs. 11 and12, a guard 59h is mounted on thecarriage to partly inclose the wheellcarrying the teeth 59. The shaft 56a extends through an aperture in the top of the guard, and thehandwheel 58a is mounted above the guard.

Means is provided for automatically stopping the operation of themandrel and of the carriage-moving means at the end` of each cut, andfor starting the operation when the carriage is returned to position fortaking another cut. Preferably, the parts are stopped by stopping thedriving motor, and, when the motor is an electric motor as here shownand described, it is stopped byy opening a suitable switch.

Referring to Figs. 1, 8 and 10, 70 is a bent lever pivoted at 71 indownwardly depending ears 7 2 on the bracket 13, which lever has a'T-bar 73 on its upper end. At each end of the T-bar are mountedupwardly rejecting conical cam surfaces 74- 74', pre erably formed onthe heads of pins which are adjustably mounted in the T-bar by beingscrew-threaded therein and 'provided with lock nuts 75-75 for securingthem in adjusted osition. This allbar 73 is located in a slot 26 in theplate 11i, and at the eXtreme right hand end thereof. On the other armof the lever there is formed a slot '77 (Fig. 10) which engages a pin 78on the plunger 79 of a suitable switch 8O carried by the bracket 13.When the ee-y nestjes plunger is raised, the switch is o cned and whenthe plunger 79 is depresset, the switch is closed.

Formed on the right hand end oi the carriage sleeve 41 is a pair ofreversely inclined annular cam surfaces 81 and 82. and the cones Tic-7iare in a position to be engaged by the cam surfaces 81 and 82 duringthesliding' movement ofthe carriage. As

the carriage reaches a position near its rightl hand limit of travel,the cam 81 engages the cone 741 and rocks the lever 70 into the positionshown in Fig. 8, thereby opening the switch and stopping the motor.`When the carriage is returned to the left to take a new cut, the camsurface 82 engages the other cone 74 and rocks the lever 70 intoposition shown in Fig. 1, thereby closing the switch and starting themotor. lt will be clear that the operation of the Switch does not limitor interfere with the movement of the carriage in either direction. Thecarriage after engaging one of the cones is tree to continue itsmovement under the force of the inertia of the motor and other rotatingparts.

For the purpose of automatically removing the chips or shavings, asuction box S3 Fig. 8) is mounted adjacent to the knife with an openface toward the tablet, and extending downward through an opening 8i inthe plate 14 is a'flexible tube 85, leading from the box 83 to a fan 86(Fig. 1) which withdraws the shaving-S from the end of the tube anddeposits them in a receptacle, here shown in the form of a bag 87, whichis preferably porous and is removably secured to the bottom of the fanas by means of a clamping ring S8 and a set-screw 89. i

For the purpose of removing the shaved tablet from the mandrel, asuitable tablet ejector mechanism 90 is provided, which .serves toloosen the tablet from the mandrel and, the gate 22 being open, thetablet is then removed by hand. This ejector mechanism of itselfconstitutes no part of this invention,2 and will not be described indetail.

Referring to Fig. 14,-, 97 is a 'box or casing mounted on the interiorof the main trame or casing 1 and inclosing the means employed forcontrolling the resistance for the current iiowing to the motor. Thiscasing is also shown in dotted lines in Figs. 1 and 17. inside thecasing 07 is an inclosure 97a., preferably made oi sheet metal andperforated as shown in Figs. 1 and 14. inside the inclosure 97a are twoparallel horizontal resistance coils 9S and 08, connected respectivelyto the wires 101 and 103. Between the coils in the back 'wall of thecasing 1 is a slot 99 (Fig. 1). Slidably mounted in the slot 90 is amember 100 which carries a connectingr clip 100l slidably engaging andelectrically connected to the two coils. The clip 100a is electricallyinsulated from the carrier member 100. The wires 101 and 103, togetherwith other suitable wires, such as 10i. connect the coils with thesocket 102, the` motor l2 and the switch 80. By adjusting the slidingniember 100 in the slot 00. the clip 100a may be moved along the coilsand the resistance may be increaser'l or decreased at will, therebyvarying the speed of the motor, and consequently the speed at which therecord tablet is driven. Preferably a pointer 105 is associated with thesliding member 100, which member is manipulated by means ot' a hand-hold106 of electrical insulating` material. A suitable scale may be, andpret'- erably is, associated with the pointer 105 whereby the desiredspeed may be indicated.

rl`he socket 102 for the electrical connections may be of any suitableform and, as here shown, it consists of two binding posts for the wires101 and 104 suitably inclosed in a casing 106, which binding posts arein electrical connection with the circuit plugs 107 and 108,respectively, for reception of the sockets on the usual plug carryingthe main current wires 109 and.110.

W'hile the construction of the device has been herein described withconsiderable detail and particular-ity, it will be understood that theinvention is not limited to the specific and detailed construction thusdescribed; and, furtherfore, it will be understood that certain parts orsub-combinations of the mechanism may be employed in the absence ofother parts or combinations. All such variations from the specilicconstruction shown and described, and such subcombinations, are withinthe purview or' the invention, the limits of which are to be determinedby the appended claims rather than by the specific construction hereinset forth.

What is claimed isz-'- 1. ln a machine for shaving sound-record tablets,the combination of a tablet-carrying mandrel, a carriage movable along atablet on the mandrel from one end to the other, a knife on thecarriage, and knife-advancing means automatically operable on thetermination of each cut by a longitudinal movement of the carriage.

2. ln a machine for shaving sound-record tablets, the. combination or" atablet-carry,- ing mandrel, a carriage movable along a tablet on themandrel and capable of being lifted away therefrom, a knife on thecarriage, and knife-advancing m'eans automa-ticallyl operable by alifting movement of the carriage. Y Y /Sfln a machine for shavingsound-record tablets, the combination of a tablet-carrying mandrel, acarriage movable along a tablet on the mandrel and capable or' beinglifted :ses

away therefrom, a knife on the carriage, and knife-advancing meansautomaticallyI operableby a lifting movement ofthe carriage or by alongitudinal lmov'ement thereof.

4l. In aiachine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage, a guide or way for said carriage onwhich the carriage is capable of both longitudinal movement and. turningmovement, a knife supported on the carriage, mechanism for adjusting theknife with relation to a tablet on the mandrel, and means operable onthe termination of each cut to actuate said mechanism when the carriageis turned about said guide or way.

5. In a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage, a guide or Way for said carriage onwhich the carriage is capable of both longitudinal movement and turningmovement, a knife supported on the carriage, mechanism for adjusting theknife with relation to a tablet on the mandrel, and means operable onthe termination of each cut to actuate said mechanism upon longitudinalmovement of the carriage on said guide or Way.

6. In a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage, a guide or Way for said carriage onWhich the carriage is capable of both longitudinal movement and turningmovement, a knife supported on the carriage, mechanism for adjusting theknife With relation to a tablet on the mandrel, and means operable onthe termination of each cut to actuate said mechanism upon longitudinalmovement of the carriage on said guide or Way or upon turning movementof the carriage on said guide or way.

7. In a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage movable along a tablet on themandrel, a knife movablyl mounted on the carriage, and Worm-gearmechanism mounted on the carriage and connected with the knife formoving the latter toward or from the tablet.

8. ln a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage movable along a tablet on themandrel, a knife movably mounted on the carriage, and mechanism mountedon the carriage and connected with the knife for moving the lattertoward or from 'the tablet, the said mechanism comprising a rack rigidlyconnected to the knife, a rotatable pinion engaging the rack, and meansfor turning the pinion.

9. ln a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage movable along a tablet on themandrel, a knife movably mounted on the carriage, and mechanism mountedon Laar/,vae

the carriage and connected With the knife for moving the latter towardor from the record, the said mechanism comprising a rack rigidlyconnected to the knife, a rotatable pinion engaging the rack, a Worm-Wheel rotatable with the pinion, a Worm engaging the worin-wheel, and adevice for turning the Worm.

10. ln a machine for shaving sound-record tablets, 'the combination of atabletcarrying mandrel, a carriage movable along the tablet on themandrel, a knife movably mounted on the carriage, and mechanism mountedon the carriage and connected with the knife for moving the lattertoward or from the tablet, the said mechanism comprising a rack rigidlyconnected to the knife, a rotatable pinionengaging the rack and meansautomatically operable by Vmovement of the carriage for turning saidpinion.

ll. ln a machine for shaving sound-record tablets, the combination of atabletlarrying mandrel, a carriage movable albng the tablet on themandrel, a vknife movably mounted on the carriage, and mechanism mountedon the carriage and connected with the knife for moving the lattertoward or from the record, the said mechanism comprising a rack rigidlyIconnected to the knife, a rotatable pinion engaging the rack, aWorm-Wheel rotatable with the pinion, a Worm engaging the Worm-Wheel andmeans automatically operable by movement of the carriage for turningsaid Worm.

12. ln a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage movable along a tablet on themandrel, a knife mounted on the carriage, mechanism comprising amanually operable rtatable shaft for adjusting the knifev with relationto the tablet, worm-gear mechanism for rotating said shaft and meansautomatically operable by a movement of the carriage V for actuatingsaid Worm-gear mechanism.

13. ln a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage, a guide or way for said carriage, aknife supported on the carriage, and a lever fulcrumed on the carriageand operatively connected to said knife, one arm of said lever being ina position to operatively contact ivith lever operating depression insaid guide or Way to rock the lever upon movement of the carriage aftercompletion of each cut.

lll. lin a machine for shaving sound-record tablets, the combination ofa tablet-carrying mandrel, a carriage movable along a tablet on themandrel, a knife mounted on the carriage, mechanism comprising wormgearmechanism for adjusting the knife with relation to the tablet, arotatable vvheel for actuating said .vormgear mechanism, ratchet teeth'on the wheel, a reciprocating paivl adapted to engage the teeth to turnthe Wheel, and a pand-actuating device automatically operable by amoi/ement of the carriage.

l5. ln a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage movable along a tablet on themandrel, a guide or Way for said carriage, a knife mounted on thecarriage, mechanism comprising a rotatable wheel for adjusting the knifewith relation to the tablet, ratchet teeth on the wheel, a reciprocatingpawl adapted to engage the teeth to turn the wheel, and a pawl-actuatingdevice coacting with camming means on said guide or way andautomatically operable by a movement of the carriage.

i6. ln a machine for shaving sound-record tablets, the combination or" atablet-carrying mandrel, a carriage movable along a tablet on themandrel, a knife on the carriage, mechanism comprising a rotatable`shaft for 'adjusting the knife with relation to the ta let, ratchetteeth carried by the sha-ft, a recibrocating` paivl adapted to engagethe teeth to turn the shaft, a pand-actuating device automaticallyoperable by a movement of the carriage, and means for normally holdingthe pawl out ot engagement with the teeth, thereby leaving the shaftfree to be turned manually in either direction.

i?. ln a machine tor shaving sound-record tablets, the combination of atablet-carrying mandrel, a carriage movable along a tablet on themandrel, a knife on the carriage, mechanism comprising, a rotatableshalt for adjusting; the knife with relation to the tablet, ratchetteeth carried by the shaft, a reciprocating pavvl adapted to engage theteeth to tarn the shaft', a peril-actuating 4device automaticallyoperable by a movement of the carriage, and means tor holding the paWlout of engagement with the teeth when at the. end of its path otreciprocation, thereby leaving the shaft free to be turned manually ineither direction.

18. ln a machine -for shaving sound-record tablets, the combination ot atablet-carrying mandrel, a carriage movable along a tablet on themandrel, a knife on the carriage, mechanism comprising aJ rotatableshaft for adjusting the knife with relation to the tablet, ratchet teethcarried by the shaft, a reciprocating pavvl adapted to engage the teethto turn. the shaft, a paivlactuating device automatically operable by amovement of the carriage, and a cam in the path of the paWl permittingto engage the teeth during the central part ot its path of reeiprocationand :torcingit ont ot engagement therewith the ends of its pathreciprocation, thereby leaving` the shaft free to be turned manually ineither direc- 19. ln a machine shaving sound-record tablets, thecombination ot a tablet-carrying;- mandrel, a carriage movable along atablet on the mandrel, a knife movably mounted on the carriage, andmechanism lor automatically moving,` the knife relatively to thecarriage toward the tablet comprising a lever pivoted on the carriageabout an airis substantially parallel tothe mandrel and an abutmenthired `against movement vwith the carriage.

20. ln a machine for shaving scandrecord tablets, the combination oit atabletcarrying mandrel, a carriage movable along` a tablet on themandrel, a knife movably mounted on the carriage, and mechanismautomatically moving` the knife relatively to the carriage toward thetablet comprising a lever pivoted on the carriage about an axissubstantially parallel to the mandrel and a cam Xed against movementwith the carriage.

21. ln a machine for shaving soundrecord tablets, the combination of atabletcarrying mandrel, a carriage movable along a tablet on themandrel, a knife movably mounted on the carriage, a mechanism Jr'ormoving the knife relatively to the carriae toward the tablet comprisinga rotatable shaft on the carriage, ratchet teeth. carried by the shaft,a reciprocating pavvl adapted toengage the teeth to turn the shalt. aparviact'uating lever pivoted on the carriage about an axissubstantially parallel to thc mandrel, and a fixed abutment for engagingthe lever.

22. ln a machine for shaving` soundrecord tablets, the combination otratabletcarrying mandrel, a knife-supporting carriage, a knifemovablymounted on the carriage, a mechanism for moving the knife relatively'tothe carriage toward the tablet comprising a' movable device on the carriage, and a guide for the carriage on which it is movablelongitudinally, the said guide having a part provided with a surfaceadapted to engage and actuate the said movable device on the carriagewhen the carriage is moved,

23. ln a machine tor shaving sound-A 2st. lin a machine for shavinffsoundrecord tablets, the combination ot a tabletcarrying mandrel, aknife-suppertingw carriage, a guide for the carriage on which it ismovable longitudinally, the guide haring; a notch therein, a knife inovably mounted on the carriage, and a mechanism for moving the kniferelatively to the carriage toward the tablet comprising a rotatableshaft on the carriage, ratchet teeth carried by the shaft, areciprocating pawl adapted to en-l gage the teeth to turn the Wheel, anda pand-actuating lever on the carriage having a part automaticallymovable into the said notch of the guide.

25. ln a machine for shaving soundrecord tablets, the combination ot atabletcarrying mandrel, a knife-supportingl carriage, a guide for thecarriage on which it is movable longitudinally, the guide having at oneside a notch with one end beveled, a knife movably mounted on thecarriage, and a mechanism for moving the knife relatively to thecarriage toward the tablet comprising a device on the carriageautomatically movable transversely into the' notch of the guide andadapted to be forced outward by the beveled side of the notch when thecarriage is moved, thereby moving the knife.

26. ln a machine for shaving soundrecord tablets, the combination of atabletcarrying mandrel, a knife-supporting carriage, a guide for thecarriage on which it is movable longitudinally, the guide having a notchtherein, a knife movably mounted on the carriage, and a mechanism formoving the knife relatively to the carriage toward the tablet comprisinga device on the carriage automatically movable into the notch of theguide and adapted to be forced outward when the carriage is movedlongitudinally along the guide.

27. lin a machine tor shaving soundrecord tablets, the combination ot atabletcarrying,- mandrel, a knife-supporting carriage, a guide for thecarriage on which it is movable angularly, the guide having a notchtherein, a knife moaably mounted on the carriage, a mechanism for movingthe knife relatively to the carriage toward the tablet comprising adevice on the carriage automatically movable into the notch ci? theguide and adapted to be 'forced outward when the carriage is movedangularly on.

the guide.

28. ln a machine for shaving soundrecordv tablets, the combination of atabletcarrying mandrel, a knife-supporting carriage, a guide 'for thecarriage on which it is movable longitudinally or angularly, the guidehavinganotch therein, a knife movably mounted on. the carriage, andy amechanism for moving; the knife relatively to the carriage toward thetablet comprising a device on the carriage automatically movable intothe notch of the guide and adapted to be forced outward vvhen thecarriage is moved angularly or is moved longitudinally on the guide.

29. ln a machine for shaving soundrecord tablets, t le 'combination of atable"- carrying mandrel, a carriage, a guide or Way for said carriageon which the carriage has both longitudinal and turning movement, a camand a shoulder on said guide or Way,

mechanism for advancingthe knife a pre-' determined` distance after thetermination of each cut, and means operatively connected With saidmechanism and engaging said cam or shoulder by a longitudinal or turningmovement respectively of the carriage on said guide or Way.

30. ln a machine for shaving;- sound-record tablets, the combination ofa tabletcarrying mandrel, a carriage movable along a tablet on themandrel, a knife carried by the carriage, a suction boX supported on thecarriage adjacent the knife, a fan fixed against movement With thecarriage, and a llexible tube connecting the suction box with the fan.

3l. ln a machine for shaving sound-record tablets, the combination of asupporting plate, a tablet-carrying mandrel above the plate, a carriageabove the plate and movable along a tablet on the mandrel, a knifecarried by 'the carriage, a suction box supported on the carriageadjacent the knife, a tan below the plate fixed against movement withthe carriage, and a flexible tube connecting the suction boX With thean,-the said plate being provided with a slot for the tube permittingthe tube to move with the carriage.

32. ln a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a carriage movable along a tablet on themandrel, a knife carried by the carriage, a suction box supportedadjacent the knife, a fan having its suction connected with the suctionbox, and a porous shavings receptacle connected With the discharge ofthe fan.

33. ln a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a carriage movable along a tablet on themandrel, a knife carried by the carriage, a suction box supported ad-Ajacent theikniie, a tan having its suction connected With the suctionbox, and a porous baga connected with 'the discharge of the tan vtoreceive shavings.

34., lin a machine for shaving sound-record tablets, the combination ofa tabletcarrying mandrel, a knife-carrying' carriage movable along; aytablet on the mandrel, means tor moving the carriage, means for drivingthe mandrel and the carriage moving' means, and means automaticallyoperable by the carriage when it. reaches a position near the end of thetablet for stoppingn the mandrel and the carriage moving means, saidlast-mentioned means being` so nconstructed that the carriage may passby its stop-operating' position.

machine shaving sound-recmamas ord tablets, the combination et atabletcarrying mandrel, a knife-carrying carriage movable along a tableton the mandrel, means for moving the carriage, means for driving themandrel and the carriage moving means, and means comprising eoacting camsurfaces automatically operable by the carriage when reaches a positionnear the end of the tablet for stopping the mandrel and the carriagemoving means and automatically operable by the carriage during itsreturn to initial position for starting the mandrel and the carriagemoving means.

36. ln a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage movable along a tableton the mandrel, means for moving the carriage, means for driving themandrel and the carriage moving means, and means comprising coacting camsurfaces automatically operable by the carriage when it reaches aposition near the end of the tablet for stopping the mandrel and thecarriage moving means.

37. ln a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage movable along atablet` on the mandrel, means for moving the carriage, means for drivingthe mandrel and the carriage moving means, and means automaticallyoperable by the carriage when it reaches a position near the end of thetablet for stopping the mandrel and the carriage moving means andautomatically operable by lthe carriage during its return to initialposition for starting the mandrel and the carriage moving means, saidmeans being so constructed that the carriage may pass by itsstop-actuating position.

38. ln a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage movable along a tableton the mandrel, means for moving the carriage, an electric motor fordriving the mandrel and the carriage moving means, a switch in the motorcircuit, and means con'iprising coacting cam surfaces automaticallyoperable by the carriage vvhen it reaches a position near the end of thetablet for opening the switch to stop the motor.

39. ln a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage movable along tableton the mandrel, means for moving the carriage, an electric motor fordriving the mandrel and the carriage moving means, and means comprising'av switch automatically operable by the carriage whenit reaches ayposition near the end of the tablet for stopping the motor andautomatically operable by the carriage during its return te initialposition 'for starting cams operatively connected with the switch,

and cams on the carriage coacting with said first-named cams whereby theswitch is automatically operable by the carriage vvben it reaches aposition near the end of the tablet for stopping the motor andautomatically operable by the carriage during its return to initialposition for starting the motor.

41.- n a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage movable along a tableton the mandrel, means for moving-the carriage, an electric motor fordriving the mandrel and the carriage moving means, and means comprisinga switch automatically operable by the carria ge when it reaches aposition near the end of the tablet for stopping the motor, said meansbeing so constructed that the carriage may pass by its switch-operatingposition.

4Q. n a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage movable along a.tablet on the mandrel, means for moving the carriage, an electric motorfor driving the mandrel and the carriage moving means, a switch in themotor circuit, and means automatically operable' by the carriage when itreaches a position near the end of the tablet for opening the switch tostop the motor.

43. ln a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage, a guide for thecarriage on which it is movable longitudinally and angular-ly, means formoving the carriage along the guide, means for driving the mandrel andthe carriage moving means, and means automatically operable by thecarriage when it reaches a position near the end of the tablet forstopping the mandrel and the carriage movingI means and automaticallyoperableby the carriage when it is returned to initial position forstarting the mandrel and the carriage moving means, the said stoppingand starting means. being operable with the carriage in any angularposition.

4A. ln a machine for. shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage, a guide for thecarriage on which it is movable longitudinally and angularly, means formoving the carriage along the guide,

means for driving the mandrel and the earriage-mov'ing means, and meansautomatically operable by the carriage when it reaches a position nearthe end of the tablet for stopping the mandrel and the carriagemovingmeans, the said stopping means being operable when the carriage is inany angular position.

l5. ln a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage movable along a tableton the mandrel, means for moving the carriage, mea'ns for driving themandrel and the carriage moving means, a pivoted T-lcver," acontrolling' means connected with the body part of the lever forstopping and starting the movement of the mandrel and the carriagemoving means, and devices on the arms of the lever for engagement withthe carriage to move the lever to bring the controlling means intostopping position when the carriage moves in one direction and intostarting position when the carriage moves in the other direction.

46. ln a machine for shaving sound-record tablets, the combination of atabletcarrying mandrel, a knife-carrying carriage movable along a tableton the mandrel, means for moving the carriage, means for driving themandrel and the carriage-moving means, a pivoted lever, a controllingmeans connected with the body part of the lever for stopping themovement 'of the mandrel and the carriage-moving means, and a device onthe lever having a cam surface for engagement with a cam surface on thecarriage to bring the controlling means into 'stopping position, saidlever being moved by the coaction of said cam sur-faces to a positionpermitting the passage of the carriage by its stop-controlling position.

47. ln a machine for shaving sound-record tablets` the combination of atablet-carrying mandrel, a knife-carrying carriage, 'a

guide for the carriage on which it is mov# able longitudinally andangularly, means for moving the carriage along the guide, means fordriving the mandrel and thecarriage moving means, a pivoted'T-lever,v acontrolling means connected with the body part of the lever for'stopping and starting the m'oven'ient of the n'iandrel and of'thecar-Ariage nioving means, an abutment on the carriage concentric with theguide, and devices on the arms of the lever for engagement with theabutment irrespective of the angular 'position of the carriage to'movethe lever to bring the controlling means into stopping position whenthecarriage moves in 'one direction and into startingposition when the.carriage moves in the other direciioi. i

4S. ln a machine for shaving sound-recanemia ord tablets, thecombination ot a tablet-carrying mandrel, a knife-supporting carriagemovable along a tablet on the mandrel, a driving motor, a casingsurrounding the motor, an electrical resistance device entirely withinthe casing and electrically connected with the motor, and manuallyoperable means accessible from the exterior of the casing for adjustingthe resistance device.

49. ln a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a knife-supporting carriage movable along atablet on the mandrel, a driving motor, a casing surrounding the motorand provided with a slot in one wall, an electrical resistance deviceentirely Within the casing and electrically connected with the motor,and manually operable means eX- tending through the slot of the casingand movable therein for adjust-ing the resistance device.

50. In a machine for shaving sound-reeord tablets, the combination orn atablet-carrying mandrel, a knife-supporting carriage movable along atablet on the mandrel, Va driving motor, a casing having its top open, acover plate for the casing supporting the mandrel and the carriageon'its upper side and the motor on its lower side, and an electricalresistance device positioned within the easing and supported entirelyindependently of the said cover plate.

51. n a machine for shaving sound-record tablets, the combination of atablet-carrying mandrel, a knife-supporting carriage movable along atablet on the mandrel, a driving motor, a receptacle for shavings, asheet-metal box surrounding the motor and the sliavings receptacle, thebox being provided with an opening bordered by a depressed liangeslottedv along one edge, a sheet-metal door formed to engage thedepressed tlange and provided with ears eX- tending through the vslotsand having bent lobes to prevent removal, and a latch for holdingthefdoor in closed position.

52. ln a machine forv 4shaving sound-reeord tablets, the combination ofa tablet-carrying mandrel, a knife-'supporting' carriage movable alongal tablet "on'the' mandrehav driving motor, a receptacle tor shavings, asheet-metal box surrounding the motor and tlie'shavings' receptacle, theboil' being pro` vided with an. opening bordered by a depressed;tiange', a'sheet-metal door` :termed to engage the depressed flange andhinged at one edge, and a latch pivot-ed to the door opposite'the hingededge andv formed with one linger adapted to engage the'inner surface ofthe iiange and with another linger engaging' the vinner surface ofthevdoorto holdY the first said inger'inv place."`

53. In a machine for shaving sound-record tablets, the combination o'tatablet-car- Tying manclrel, a carriage Inovalole along atablet on themandel, a knife on the carriage, means for manually adjusting Said knifeto take from the tablet a first roughcnt, and means automaticallyoperable oy the restoration of the Carriage to initial position foradvancing said lnit'e to take the inal finishing-ent of predetermineddepth.

In a machine for shaving sound-reoorcl tablets, the combination of atablet-oar laying mandrel, a carriage movable along a tablet on themandrel, a knife. on the caiiiage, means foi manually adjusting saidknife to tale from the tablet first iouglb out, and mea-ns automaticallyoperable upon completion ot said ii'st-cut and by the restofation oftlie cariiage to initial position for advancing said knife to take thefinal nnisningont of pedetermineol depth.

ln a. machine for shaving sound-teou ill ord tablets, the combination ofa tablet-Caiiying mandrel, a carriage movable along a tablet on themandrel, a guide or Way fol said caifriage on which the carriage iscapable ot both longitudinal and turning movement, a knife. on thecarriage, means for manually adjusting said knife to take from thetablet a first rough-cut, and means automatically operable. byraising'tlie can riage upon restoring the same to initial posi tion foradvancing saicl knife to take the final finishing-eut ot predetermineddepth ln testimony whereof We have signecl this speeication in thepresence et two subscribing witnesses.

FRANK L. JOHN J. SCULLY. Tl/tnesses:

LESLIE Sg EASTMAN, J. S. GRIFFITH.

